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The market's interpretation of Google's new TurboQuant algorithm, which threatens to significantly reduce memory requirements for artificial intelligence models, led to a sector-wide sell-off. This included a notable drop in semiconductor stocks, of which Teradyne is a part. The concerns generated by this news overshadowed recent strong earnings from memory-makers, contributing to a significant decline in Teradyne's stock price.

Reports of SK Hynix's potential $14 billion U.S. listing increased competitive supply pressure in the market, which could have impacted Teradyne's stock price negatively. These sector-wide concerns can lead to a sell-off in stocks like Teradyne, as investors react to potential decreased demand for their products.